Thank you everyone! I feel so relieved!
Plan B messes up your cycle and can cause bleeding that looks like a period usually withing a week or two, then you can have a period after that. It's very unlikely you are pregnant since you took plan b within the time frame. If you are going to have sex, next time be careful and use protection. If you are not good at remembering the pill, then talk to your doctor about other bc options.
I dont think your pregnant.
The plan b could be the reason for the more than once period as it messes up your hormones.
I would not go off the Birth Control as it could get you regular again... Maybe try some safe sex less stress!!
Good Luck ;)